baber/WOPTO huggingface dataset:
Patent GB-430025-A (GB)
Title: Piezoelectric loud speakers
IPC: H04R17/00
Filed: 1933-12-12
Abstract: 430,025. Loud-speakers. BOONTON RESEARCH CORPORATION, Boonton, New Jersey, U.S.A. Dec. 12, 1933, No. 34945. Convention date, June 14. [Class 40 (iv)] [See also Group XL] Electro - acoustic apparatus, more particularly a loud-speaker, comprises a piezo-electrically active crystal diaphragm 1, Fig. 1, clamped between gaskets 5, 6 across the throat of a horn 2 provided with a bullet-shaped insert 8. The protective cover 10 also houses the transformer 9 within a sealing compound 11 together with sound absorbing material 12. The diaphragm, Fig. 4, comprises four square crystal units secured together along contiguous edges, each unit consisting of a pair of superposed plates cut from Rochelle Salt with their flat faces normal to the electrical axis. The plates are assembled with an electrode between their adjacent faces and electrodes at their outer faces, the four units being connected in parallel as shown. The loud-speaker preferably has a resonant frequency above 7000 cycles and circuit arrangements are described for controlling the frequency response characteristic. Specification 409,040 is disclaimed.
Patent GB-1457870-A (GB)
Title: Membrane
IPC: B01D71/02
Filed: 1972-07-26
Abstract: 1457870 Cellulose acetate webs H X D PEDROSA 18 Oct 1973 [26 July 1972] 34947/72 Heading B5B [Also in Divisions C3 and B1] A semipermeable membrane of cellulose acetate has cupric ferrocyanide uniformly distributed throughout the thickness of the membrane and may also possess a series of fibres or channels extending the length or breadth thereof and extending beyond one edge. The membrane may be produced by one of the following methods:- (a) soaking a web of cellulose acetate in an aqueous solution of cupric ferrocyanide, which may contain acetone, and then drying the web; (b) forming a mixture of cellulose acetate, cupric ferrocyanide, water and optionally acetone, pouring the mixture in a vessel and removing the solvent to form the web; (c) placing a bag of cellulose acetate containing an aqueous solution of CuSO 4  in a vessel containing an aqueous solution of potassium ferrocyanide whereby the solutions diffuse into the web from either side and react to form cupric ferrocyanide.
Patent GB-977501-A (GB)
Title: Improvements in or relating to centrifugal pumps
Inventor: ARKLESS GEORGE FREDERICK
IPC: F04D1/06
Filed: 1960-10-13
Abstract: 977,501. Centrifugal pumps. G. & J. WEIR Ltd. Jan. 8, 1962 [Oct. 13, 1960], No. 35035/60. Heading F1C. A centrifugal pump comprises two stages, the impeller of each stage being mounted in overhung manner on the pump shaft, and the bearing means protrudes below the eye of the impeller of the second stage to reduce the overhang to a minimum. In the centrifugal pump shown, both impellers 1, 2 are overhung on the shaft 3, the adjacent shaft bearing 5 (or a stuffing box or seal) protruding below the eye 6 of impeller 2 so as to reduce the overhang. Impeller 1 is of smaller outside diameter than impeller 2, and the interstage passage 8 is surrounded by a discharge annulus 7. A wear ring 9 for the eye 4 of impeller 1 is of approximately the same inner diameter as the eye 6 so that the first stage is in hydraulic axial balance. A wear ring 10 for the eye 6 is smaller in diameter than a wear ring 11, whereby there is a net hydraulic thrust on impeller 2 acting towards the left. This thrust is opposed by a thrust exerted at the back of impeller 2 by water leaking past wear ring 11 into a space 12. Any lack of balance between the thrusts causes axial movement of the impellers and shaft to vary the size of an annular gap 15 connecting the space 12 with a passage 17 leading to the pump suction or other low pressure zone. The resultant variation of the pressure in chamber 12 restores the balance.
Patent GB-606287-A (GB)
Title: Improvements in or relating to apparatus for the manufacture of sliding clasp fasteners
IPC: B29C45/14
Filed: 1945-12-28
Abstract: 606,287. Casting composite articles; moulds. WINTERHALTER, M. Dec. 28, 1945, No. 35075. Convention date, Jan. 19. [Class 83 (i)] [Also in Group V] A two-part die 1, 2, for casting a number of fastener elements of a sliding-clasp fastener on to a stringer tape has a rod 20 longitudinally adjustable in the channel 8 which feeds the molten metal or plastic material to the individual mould cavities 3 so that the number of elements cast may be varied. In the die shown the channel 8 supplies two rows of cavities 3, 4 to cast elements on to two tapes, the other end of the channel being closed by a cross-slide 15. When it is desired to cast a greater number of elements than there are cavities 3, 4, the die is opened after one operation and the casting is removed, then the slide 15 and another slide 16 in the die part 2 are moved transversely to bring grooves 31, 34, &c. therein into line with the channel 8 and rows of cast elements and the casting is replaced with its last elements in the first recesses, the others being accommodated in the grooves 31, 34, &c. and others 32<SP>1</SP>, 341 in the dies 1, 2. Further elements are then cast on to the new lengths of tape thus drawn between the dies. In a modification the transverse slides are replaced by rotary members and in another by a shut-off member for the channel 8 which does not intersect the channels 11, 12 for the tapes. If desired, the dies 1, 2 may each comprise two or more parts 38, 39, Fig. 4, removably mounted in a frame 41 by screws 49, 50 and the channel 8 may have one or more inlets through which the casting material is injected. The mould may be provided with electric heater coils and with ejectors.
Patent GB-180359-A (GB)
Title: Improved aircraft, submarines, and other totally immersed craft or structures
IPC: B64C3/54
Filed: 1920-12-14
Abstract: 180,359. Thurston, A. P., and Bristol Aeroplane Co., Ltd. Dec. 14, 1920. Drawings to Specification. Submarine vessels, special apparatus for steering.-The tips of wings &c. used for the support or control of aircraft, submarines, hydroplanes and other immersed craft, have a series of small rigid pinions, shaped as aerofoils, disposed behind one another and lying on a straight line, or on a cambered curve the chord of which is either parallel or inclined to the chord of the main plane. Pinions may also be placed in gaps in the wings.
Patent GB-1464275-A (GB)
Title: Diaper with adhesive tabs
IPC: A61F13/58
Filed: 1974-08-09
Abstract: 1464275 Diaper JOHNSON & JOHNSON 9 Aug 1974 [10 Aug 1973] 35185/74 Heading A3V A disposable diaper has attached thereto a pair of tab fasteners each comprising a flexible substrate, a pressure sensitive adhesive coating and a release sheet folded back on itself to provide a pull tab. The uncovered portion of the coating is adhered to the diaper backing sheet.
Patent GB-1241960-A (GB)
Title: Improved rotor for rotary-wing aircraft
IPC: B64C27/32
Filed: 1968-07-24
Abstract: 1,241,960. Rotary-wing aircraft rotor. SUDA-VIATION SOC NATIONALE DE CONSTRUCTIONS AERONAUTIQUES. 24 July, 1968 [31 July, 1967], No. 35280/68. Heading B7W. A rotary-wing aircraft rotor comprises a onepiece hollow rotor mast comprising a shaft 1, a hub 7, and rotor-blade supporting arms 7a and a rotor blade mounted for rotation on each arm by a sleeve 12a attached to the blade by pins passing through apertures in each prong of a clevis 15 and supported around each arm by needle bearings 13 and 14 which are separated by distance pieces 13a and 13b and retained in position by an end distance piece 19, said blade being restrained from axial and rotational movement with respect to said arm by a stack of torsionally flexible blades 21 housed in arm 7a, the said stack being attached at one of its ends by a pin 24 to a core 23 housed in hub 7 and at its other end by a pin 22 to a plug 18 whose flange carries flats 20 which co-operate with grooves in sleeve 12a. The blades 21 allow sliding of the rotor blade only to extent of accommodating their extension due to centrifugal forces. The chambers formed from each of the arm/sleeve combinations are filled with lubricating oil from a reservoir 26 which is positioned in the top surface of hub 7 and has a filler cap 27 and a visual oil level indicator 28, each chamber being sealed at the root end of each arm by a rotation accommodating seal 25. The rotatable portion 50 of a swashplate is rotated by a caliper 51 connected to a member 52 secured by bolts 53 (not shown) to the mast whilst its movement is transmitted to each sleeve 12a by links 54 and levers 56. Fairings 57 and 58 protect the entire rotor head assembly.
Patent GB-868293-A (GB)
Title: Improvements in or relating to agricultural or horticultural implements
IPC: A01B1/24
Filed: 1958-11-04
Abstract: 868,293. Aerating lawns. DANBY, E. A. Nov. 2, 1959 [Nov. 4, 1958], No. 35324/58. Class 6(2). Aerating discs 3 are mounted on a carrier 6 pivoted on a member 10 attached to a motor lawn mower 2. Springs 12 acting on a lever 13 urge the discs into contact with the ground and the discs are raised by means of a lever 18. The discs 3 are spaced apart by means of springs 5.
Patent GB-191068-A (GB)
Title: Improvements in or relating to apparatus for collecting current from overhead conductor lines for electric traction
IPC: B60L5/36
Filed: 1922-02-14
Abstract: 191,068. Kurz, O. March 7, 1921, [Convention date]. Supporting and controlling arrangements for collectors; trolly heads; conductors and supports, arrangements of with respect to track; systems adapted specially for alternating current. - A trolly head for trackless vehicles with overhead supply comprises two or more telescopic tubes 15, 16, 17, Fig. 1, rotating in a bracket 26 and provided with ball bearings 24, 25, each tube carrying an axle 21, the wires 1, 2, 3 of the supply system being engaged by pairs of wheels 19 carried by a frame 18 mounted so as to slide and rotate on the axle 21. Duplicate wheels 27 may also be provided for use with points &c. Instead of a grooved wheel, a cylindrical contact roller with lateral guide rollers or slide plates may be used. Springs 22, 23 connect the tubes together, tending to keep the trollies erect and also to distribute evenly the strains due to the flexible connection from the plug 56 to the vehicle. This cable 32, Fig. 4, is secured to the bracket 26 by a spring 55 and plug 59, and also by a safety member 58 so as to form a cable loop 32', the member 58 breaking and the plug 56 being disconnected before the cable is injured. The bracket 26 is so designed that the resultant force R intersects the plane of the wires between the top and bottom wires, this result being maintained when the vehicle moves laterally by a tube 34 sliding from a tube 33 fixed to the vehicle and connected to the cable drum, which may be spring-operated. Specification 176,769 is referred to. The Specification as open to inspection under Sect. 91 (3) (a) states also that the tension of the cable 32 may be kept constant by passing it over fixed pulleys 47, Fig. 7 (Cancelled), and movable pulleys 48 restrained by springs or by a rope 50 under tension passing over the pulleys 48 and fixed pulleys 49, the free end of the rope 50 being acted on by a constant force. The forces acting on the pulleys 48 may increase towards the fixed end of the cable 32, such as by arranging the pulleys 48, 49 so that the angle made by the rope 50 increases, this rope being payed-out from a drum. The supply system consists of multiphase current transmitted by the multiple overhead lines. This subject-matter does not appear in the Specification as accepted.
Patent GB-511769-A (GB)
Title: Improvements relating to permanent magnets
IPC: H01F7/02
Filed: 1937-12-21
Abstract: 511,769. Magnets. ALLGEMEINE ELEKTRICITATS-GES. Dec. 21, 1937, No. 35408. Convention date, Dec. 21, 1936. [Class 35] A magnet structure for use in a measuring instrument employing a rotary coil comprises a soft iron member 2 in the form of a closed iing and a permanent bar magnet 1 of high coercivity arranged diametrically' or substantially so in the ring with one end face (N) abutting directly against the inside face of an enlargement of the ring (Fig. 1), or with one end received within such an, enlargement (Fig. 3) the other end (S) being provided with a soft . iron, pole-piece 3 bounding a cylindrical air gap 4. If a short magnet is employed, the end face (N) abuts against a radial extension of the ring. The air gap may be formed between this polepiece and another on the end of a similar bar magnet extending from a diametrically opposite point on the ring or it may be formed between the pole-piece and the ring itself as shown. The ring need not be circular. The parts of the magnet structure may be secured together by spraying with aluminium or an alloy having 20 per cent. tin or zinc with aluminium or the magnet may be welded or hard-soldered to the ring. The ring may be laminated, the laminations being welded together at parts 10, 11, 12, or riveted bushes in the holes 5, 6 may replace the welds at 11, 12. Magnetising and ageing of the permanent magnet may be effected by means of external pole-pieces provided with direct-current and alternating-current windings or such windings may be placed on the magnet. The Specification as open to inspection under Sect. 91 describes also a magnet of moulded material and part of the ring is constituted by an extension of the magnet. In a modification, two inclined magnets magnetically in parallel are connected to a common pole-piece. This subject-matter does not appear in the Specification as accepted.
Patent GB-467612-A (GB)
Title: Improvements in electric cables
IPC: H01B7/22
Filed: 1935-12-21
Abstract: 467,612. Cables. WILLIAMS, A. W. Dec. 21, 1935, No. 35421. [Class 36] A cable has a protective sheath formed of one or more metal strips which are helically wound on the cable with-adjacent turns of the strip in close proximity, there being provided between the strips a channel which is wholly or partially filled with a resilient or compressible tape formed of braided, plaited or interwoven bare wires. The tape may be coated or filled with rubber, asbestos, rubberized asbestos or mixtures of these materials. Fig. 2 shows a portion of a protective sheath consisting of helically applied segmental strips 1 between the turns of which is applied a resilient or compressible tape 3, completely filling the spaces between the strips. The tape 3 may only partially fill the spaces between the turns of the strips 1, or it may extend over the strips so that the outer surface of the sheath is formed entirely of the tape. In a modified construction the metal strips 4 and tape 6 are of the sections shown in Fig. 4. One or more cores of a multicore cable may have a sheath of metal strip and compressible tape, and a common sheath of similar construction may surround the assembled cores. This common sheath may be surrounded by insulation over which is applied an outer conducting sheath.
Patent GB-1187645-A (GB)
Title: Disperse Dyes of the Azobenzene Series, their production and Application
Inventor: ALTERMATT RUEDI
IPC: C09B1/00
Filed: 1967-08-02
Abstract: 1,187,645. Monoazo disperse dyes. SANDOZ Ltd. 2 Aug., 1967 [12 Aug., 1966], No. 35433/67. Heading C4P. Monoazo blue disperse dyes of Formula I in which X is a CN or N0 2  group, Y is chlorine or bromine, or NO 2 , R 1  is methyl or ethyl, R 2  is a #-formyloxyethyl, # or γ formyloxypropyl, # γ-diformyloxypropyl, #-formyloxy-γ-chloropropyl, # - formyloxy - γ - bromo - propyl or # - formyloxy - γ - cyanopropyl, R 3  is methyl, ethyl, propyl or butyl or cyanalkyl, or alkoxycarbonyalkyl group, or any value of R 2 , and R 4  is H, alkyl, or alkoxy group, which alkyl and alkoxy groups have 1, 2, 3 or 4 carbon atoms and may be substituted by non-watersolubilizing groups, are prepared by diazotization of an amine of Formula II and coupling with a compound of Formula III Blue shades are obtained in polyester, polyamide, acetate, polyolefines, polyamylonitrile and polyvinyl compounds.
Patent GB-906449-A (GB)
Title: Improvements in and relating to temperature control systems for aircraft
Inventor: SIMMONS ANTHONY THOMAS FREDERI
IPC: B64D13/00
Filed: 1955-12-09
Abstract: 906,449. Cooling systems for radar antennae. ENGLISH ELECTRIC CO. Ltd. Dec. 7, 1956 [Dec. 9, 1955], No. 35519/55. Drawings to Specification. Class 64 (3). The radar lens and horn, mounted on a high-speed high-altitude aircraft, are maintained at a predetermined temperature by a closed circuit fluid cooling system. Water is pumped through the system and through two heat exchangers, one of which heats the engine fuel and the other of which cools the fluid of the craft hydraulic system. The water is prevented from evaporating by subjecting it to pressure generated by the ram air pressure and the rate of flow through each exchanger is controlled by a temperature-responsive valve associated by a by-pass. Further cooling is effected by a closed air circuit.
Patent GB-1379797-A (GB)
Title: Method of preparing ethylene oxide
IPC: C07D301/10
Filed: 1972-07-28
Abstract: 1379797 Ethylene oxide ORDENA TRUDOVOGO KRASNOGO ZNAMENI INSTITUT NEFTEKHIMICHESKIKH PROTSESSOV IMENI AKADEMIKA JU G 28 July 1972 [2 Aug 1971] 35545/72 Heading C2C  Ethylene is converted to ethylene oxide by oxidizing with atmospheric oxygen in an upflowing current of ethylene-air mixture containing 3À15-3À30% by volume of ethylene at a velocity of 10-12 m./sec. with a continually circulating silver catalyst supported on a carrier, the concentration of the catalyst being 135-160 kg./cu.m. of ethylene-air mixture or the velocity 4-6 m./sec., at a temperature of 290-300‹ C.; separating the catalyst from the reaction products; isolating unreacted ethylene from the reaction products; mixing the unreacted ethylene with air and passing the mixture for repeated oxidation at a velocity of 5 m./sec. in a counter-current flow with respect to a stream of the said catalyst at a temperature of 260-280‹ C. ; and withdrawing the reaction products.
Patent GB-430748-A (GB)
Title: Improvements in and relating to cracking hydrocarbons
IPC: C10G11/08
Filed: 1933-12-19
Abstract: <PICT:0430748/IV/1> A volatile spirit suitable for use as petrol and containing aromatic and aliphatic constituents is obtained by cracking crude oils, asphalts, shale oil, creosotes &c. at temperatures of from 250 to 700 DEG  F. in presence of catalysts comprising a halogenated oxygen compound of nitrogen, e.g. nitrosyl chloride and a halide of Group III.  If the reaction is carried out in iron vessels iron chloride is also present.  Oil from a tank 1 mixed in a pipe 3 with the halide supplied from a tank 24 is cracked in a coil 6 the products being expanded and fractionated in a combined reaction and fractionating tower 9, 12, 13 from which the final product is passed through a condenser and separator 15, 16 to receivers 19, 20.  Reflux condensate is collected in a pan 21 and recirculated through a pipe 23 to the coil 6.  The gases from the separator 16 are recirculated through lines 34, 36, 40, 42 to a coil 43 where they are mixed with nitrosyl chloride from a tank 46 and the heated mixture is injected into the reaction chamber 9, from which residues are withdrawn through a pipe 28 to tanks 53, 54 or recirculated through a coil 32.  The nitrosyl chloride is added in the ratio of about 2--3 ounces per charge of 100 lbs initial material and 5 lbs aluminium chloride.
Patent GB-855627-A (GB)
Title: Improvements in or relating to receivers for electromagnetic call systems
Inventor: SNEATH OSWALD BARBER
IPC: H04B5/04
Filed: 1957-11-15
Abstract: 855,627. Inductive signalling systems. MULTITONE ELECTRIC CO. Ltd. Nov. 13, 1958 [Nov. 15, 1957], No. 35700/57. Addition to 855,347. Class 40(5). In an inductive signalling receiver of the kind described in the parent Specification the frequency selective filter comprises a tuned circuit with positive feedback, the signal from said filter triggering a signalling device at a frequency independent of the received signal frequency. In one embodiment the amplified received signal is applied to a transistor T 1  Fig. 1 in the collector circuit of which is the tuned primary winding of L 1 , two secondaries of which are ir the base and collector circuits of T 2 . Oscillation in L 1  producing the operating base emitter potential in T 2 , also produces positive feed back via the collector winding increasing the amplitude of oscillation ir L 1  until transistor circuit L 2  - T 3  oscillates at a frequency independent of the triggering frequency. Resistor R 3  damps the oscillations in L 2  in the absence of a signal. In a further embodiment, transistor T 2  is biased to operate at low signal levels by resistors R 4 , R 5  and a negative potential makes the circuit T 3  L 2  oscillate by rectification in diodes X 1  X 2 , whilst the transducer K 2  is a piezo-electric device in high step up secondary circuit of L 2 . In the modified embodiment Fig. 3, feedback through L 1  is sufficient to start oscillation in circuit L 1  T 2 . Transistor T 2  squegs at a frequency determined by the time constant of condenser C 5  and resistor R 7 , and the triggering frequency is by-passed through condenser C 6  connected across the transducer K 3 . In a further embodiment Fig. 1 (comp) the output from rectifiers X 1  X 2  is applied through a winding of L 2  and amplified by transistor circuit T 4 . Thus the squegging oscillations in circuit T 5  L 2  are of higher amplitude, producing a high audio output from transducer K 2 .
Patent GB-1008030-A (GB)
Title: Improvements relating to dynamo electric machines
Inventor: HALLETT LOUIS BERTRAM HENRY
IPC: H02K5/132
Filed: 1963-09-10
Abstract: 1,008,030. Cooling dynamo-electric machines. SUMO PUMPS Ltd. Aug. 19, 1964 [Sept. 10, 1963], No. 35716/63. Heading H2A. [Also in Division F2] A submersible electrical machine has the stator and rotor contained within a sealed casing 2 and has the output shaft 5 passing out of this casing through a pressure balancing compartment 8 sealed by shaft seals 11, 12 and flexible diaphragms 16, 17. The annular diaphragms 16, 17 are secured to end cover 6 and plate 7 respectively adjacent shaft 5, and their outer ends held, by solid spring ring 20 lodges inside cover 6, against the respective cover plates. Two identical shaft seals 11, 12 are used bearing on sealing ring 13 attached to the shaft to ensure sealing of chamber 8. The inside of diaphragm 16 is subject to the oil pressure in casing 2 through holes 21 in cover 6 and the outside of diaphragm 17 is subject to the outside pressure through holes (not shown) in plate 7.